FLUID: separate SourceView panel into its own file

hereby removing almost 200 lines of unrelated code form fluid.cxx
and making the location of the panel code more obvious.
Needs a make depend on Linux.

1 files changed, 331 insertions, 0 deletions

diff --git a/fluid/sourceview_panel.cxx b/fluid/sourceview_panel.cxx
new file mode 100644
index 000000000..8754858c8
--- /dev/null
+++ b/fluid/sourceview_panel.cxx
@@ -0,0 +1,331 @@
+//
+// Code dialogs for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2023 by Bill Spitzak and others.
+//
+// This library is free software. Distribution and use rights are outlined in
+// the file "COPYING" which should have been included with this file.  If this
+// file is missing or damaged, see the license at:
+//
+//     https://www.fltk.org/COPYING.php
+//
+// Please see the following page on how to report bugs and issues:
+//
+//     https://www.fltk.org/bugs.php
+//
+
+// generated by Fast Light User Interface Designer (fluid) version 1.0400
+
+#include "sourceview_panel.h"
+#include "fluid.h"
+#include "file.h"
+#include <FL/Fl_Tabs.H>
+#include <FL/Fl_Button.H>
+static char *sv_source_filename = NULL;
+static char *sv_header_filename = NULL;
+static char *sv_design_filename = NULL;
+
+/**
+ Update the header and source code highlighting depending on the
+ currently selected object
+ 
+ The Source View system offers an immediate preview of the code
+ files that will be generated by FLUID. It also marks the code
+ generated for the last selected item in the header and the source
+ file.
+*/
+void update_sourceview_position() {
+  if (!sourceview_panel || !sourceview_panel->visible())
+      return;
+    if (sv_autoposition->value()==0)
+      return;
+    if (sourceview_panel && sourceview_panel->visible() && Fl_Type::current) {
+      int pos0, pos1;
+      if (sv_source->visible_r()) {
+        pos0 = Fl_Type::current->code_position;
+        pos1 = Fl_Type::current->code_position_end;
+        if (pos0>=0) {
+          if (pos1<pos0)
+            pos1 = pos0;
+          sv_source->buffer()->highlight(pos0, pos1);
+          int line = sv_source->buffer()->count_lines(0, pos0);
+          sv_source->scroll(line, 0);
+        }
+      }
+      if (sv_header->visible_r()) {
+        pos0 = Fl_Type::current->header_position;
+        pos1 = Fl_Type::current->header_position_end;
+        if (pos0>=0) {
+          if (pos1<pos0)
+            pos1 = pos0;
+          sv_header->buffer()->highlight(pos0, pos1);
+          int line = sv_header->buffer()->count_lines(0, pos0);
+          sv_header->scroll(line, 0);
+        }
+      }
+    }
+}
+
+/**
+ Callback to update the sourceview position.
+*/
+void update_sourceview_position_cb(class Fl_Tabs*, void*) {
+  // make sure that the selected tab shows the current view
+    update_sourceview_cb(0,0);
+    // highlight the selected widget in the selected tab
+    update_sourceview_position();
+}
+
+/**
+ Generate a header, source, strings, or design file in a temporary directory
+ and load those into the Code Viewer widgets.
+*/
+void update_sourceview_cb(class Fl_Button*, void*) {
+  if (!sourceview_panel || !sourceview_panel->visible())
+      return;
+
+    if (!sv_source_filename) {
+      sv_source_filename = (char*)malloc(FL_PATH_MAX);
+      fluid_prefs.getUserdataPath(sv_source_filename, FL_PATH_MAX);
+      strlcat(sv_source_filename, "source_view_tmp.cxx", FL_PATH_MAX);
+    }
+    if (!sv_header_filename) {
+      sv_header_filename = (char*)malloc(FL_PATH_MAX);
+      fluid_prefs.getUserdataPath(sv_header_filename, FL_PATH_MAX);
+      strlcat(sv_header_filename, "source_view_tmp.h", FL_PATH_MAX);
+    }
+    if (!sv_design_filename) {
+      sv_design_filename = (char*)malloc(FL_PATH_MAX);
+      fluid_prefs.getUserdataPath(sv_design_filename, FL_PATH_MAX);
+      strlcat(sv_design_filename, "source_view_tmp.fl", FL_PATH_MAX);
+    }
+
+    if (sv_project->visible_r()) {
+      write_file(sv_design_filename);
+      int top = sv_project->top_line();
+      sv_project->buffer()->loadfile(sv_design_filename);
+      sv_project->scroll(top, 0);
+    } else if (sv_strings->visible_r()) {
+      static const char *exts[] = { ".txt", ".po", ".msg" };
+      char fn[FL_PATH_MAX];
+      fluid_prefs.getUserdataPath(fn, FL_PATH_MAX);
+      fl_filename_setext(fn, FL_PATH_MAX, exts[g_project.i18n_type]);
+      write_strings(fn);
+      int top = sv_strings->top_line();
+      sv_strings->buffer()->loadfile(fn);
+      sv_strings->scroll(top, 0);
+    } else if (sv_source->visible_r() || sv_header->visible_r()) {
+      g_project.basename = fl_filename_name(sv_source_filename);
+      g_project.basename = fl_filename_setext(g_project.basename, "");
+      Fl_String code_file_name_bak = g_project.code_file_name;
+      g_project.code_file_name = sv_source_filename;
+      Fl_String header_file_name_bak = g_project.header_file_name;
+      g_project.header_file_name = sv_header_filename;
+
+      // generate the code and load the files
+      Fd_Code_Writer f;
+      // generate files
+      if (f.write_code(sv_source_filename, sv_header_filename, true))
+      {
+        // load file into source editor
+        int pos = sv_source->top_line();
+        sv_source->buffer()->loadfile(sv_source_filename);
+        sv_source->scroll(pos, 0);
+        // load file into header editor
+        pos = sv_header->top_line();
+        sv_header->buffer()->loadfile(sv_header_filename);
+        sv_header->scroll(pos, 0);
+        // update the source code highlighting
+        update_sourceview_position();
+      }
+
+      g_project.code_file_name = code_file_name_bak;
+      g_project.header_file_name = header_file_name_bak;
+    }
+}
+
+/**
+ This is called by the timer itself
+*/
+void update_sourceview_timer(void*) {
+  update_sourceview_cb(0,0);
+}
+
+void sourceview_defer_update() {
+  // we will only update earliest 0.5 seconds after the last change, and only
+      // if no other change was made, so dragging a widget will not generate any
+      // CPU load
+      Fl::remove_timeout(update_sourceview_timer, 0);
+      Fl::add_timeout(0.5, update_sourceview_timer, 0);
+}
+
+/**
+ Show or hide the source code preview.
+ The state is stored in the app preferences.
+*/
+void sourceview_toggle_visibility() {
+  if (!sourceview_panel) {
+      make_sourceview();
+      sourceview_panel->callback((Fl_Callback*)toggle_sourceview_cb);
+      Fl_Preferences svp(fluid_prefs, "sourceview");
+      int autorefresh;
+      svp.get("autorefresh", autorefresh, 1);
+      sv_autorefresh->value(autorefresh);
+      int autoposition;
+      svp.get("autoposition", autoposition, 1);
+      sv_autoposition->value(autoposition);
+      int tab;
+      svp.get("tab", tab, 0);
+      if (tab>=0 && tab<sv_tab->children()) sv_tab->value(sv_tab->child(tab));
+      if (!position_window(sourceview_panel,"sourceview_pos", 0, 320, 120, 550, 500)) return;
+    }
+
+    if (sourceview_panel->visible()) {
+      sourceview_panel->hide();
+      sourceview_item->label("Show Source Code...");
+    } else {
+      sourceview_panel->show();
+      sourceview_item->label("Hide Source Code...");
+      update_sourceview_cb(0,0);
+    }
+}
+
+Fl_Double_Window *sourceview_panel=(Fl_Double_Window *)0;
+
+Fl_Tabs *sv_tab=(Fl_Tabs *)0;
+
+CodeViewer *sv_source=(CodeViewer *)0;
+
+CodeViewer *sv_header=(CodeViewer *)0;
+
+TextViewer *sv_strings=(TextViewer *)0;
+
+TextViewer *sv_project=(TextViewer *)0;
+
+Fl_Light_Button *sv_autorefresh=(Fl_Light_Button *)0;
+
+Fl_Light_Button *sv_autoposition=(Fl_Light_Button *)0;
+
+Fl_Double_Window* make_sourceview() {
+  { sourceview_panel = new Fl_Double_Window(520, 490, "Code View");
+    sourceview_panel->callback((Fl_Callback*)toggle_sourceview_cb);
+    sourceview_panel->align(Fl_Align(FL_ALIGN_CLIP|FL_ALIGN_INSIDE));
+    { sv_tab = new Fl_Tabs(10, 10, 500, 440);
+      sv_tab->selection_color((Fl_Color)4);
+      sv_tab->labelcolor(FL_BACKGROUND2_COLOR);
+      sv_tab->callback((Fl_Callback*)update_sourceview_position_cb);
+      { Fl_Group* o = new Fl_Group(10, 35, 500, 415, "Source");
+        o->labelsize(13);
+        { CodeViewer* o = sv_source = new CodeViewer(20, 50, 480, 390);
+          sv_source->box(FL_DOWN_FRAME);
+          sv_source->color(FL_BACKGROUND2_COLOR);
+          sv_source->selection_color(FL_SELECTION_COLOR);
+          sv_source->labeltype(FL_NORMAL_LABEL);
+          sv_source->labelfont(0);
+          sv_source->labelsize(14);
+          sv_source->labelcolor(FL_FOREGROUND_COLOR);
+          sv_source->textfont(4);
+          sv_source->textsize(11);
+          sv_source->align(Fl_Align(FL_ALIGN_TOP));
+          sv_source->when(FL_WHEN_RELEASE);
+          Fl_Group::current()->resizable(sv_source);
+          o->linenumber_width(60);
+          o->linenumber_size(o->Fl_Text_Display::textsize());
+        } // CodeViewer* sv_source
+        o->end();
+        Fl_Group::current()->resizable(o);
+      } // Fl_Group* o
+      { Fl_Group* o = new Fl_Group(10, 35, 500, 415, "Header");
+        o->labelsize(13);
+        o->hide();
+        { CodeViewer* o = sv_header = new CodeViewer(20, 50, 480, 390);
+          sv_header->box(FL_DOWN_FRAME);
+          sv_header->color(FL_BACKGROUND2_COLOR);
+          sv_header->selection_color(FL_SELECTION_COLOR);
+          sv_header->labeltype(FL_NORMAL_LABEL);
+          sv_header->labelfont(0);
+          sv_header->labelsize(14);
+          sv_header->labelcolor(FL_FOREGROUND_COLOR);
+          sv_header->textfont(4);
+          sv_header->textsize(11);
+          sv_header->align(Fl_Align(FL_ALIGN_TOP));
+          sv_header->when(FL_WHEN_RELEASE);
+          Fl_Group::current()->resizable(sv_header);
+          o->linenumber_width(60);
+          o->linenumber_size(o->Fl_Text_Display::textsize());
+        } // CodeViewer* sv_header
+        o->end();
+      } // Fl_Group* o
+      { Fl_Group* o = new Fl_Group(10, 35, 500, 415, "Strings");
+        o->labelsize(13);
+        o->hide();
+        { TextViewer* o = sv_strings = new TextViewer(20, 50, 480, 390);
+          sv_strings->box(FL_DOWN_FRAME);
+          sv_strings->color(FL_BACKGROUND2_COLOR);
+          sv_strings->selection_color(FL_SELECTION_COLOR);
+          sv_strings->labeltype(FL_NORMAL_LABEL);
+          sv_strings->labelfont(0);
+          sv_strings->labelsize(14);
+          sv_strings->labelcolor(FL_FOREGROUND_COLOR);
+          sv_strings->textfont(4);
+          sv_strings->textsize(11);
+          sv_strings->align(Fl_Align(FL_ALIGN_TOP));
+          sv_strings->when(FL_WHEN_RELEASE);
+          Fl_Group::current()->resizable(sv_strings);
+          o->linenumber_width(60);
+          o->linenumber_size(o->Fl_Text_Display::textsize());
+        } // TextViewer* sv_strings
+        o->end();
+      } // Fl_Group* o
+      { Fl_Group* o = new Fl_Group(10, 35, 500, 415, "Project");
+        o->labelsize(13);
+        o->hide();
+        { TextViewer* o = sv_project = new TextViewer(20, 50, 480, 390);
+          sv_project->box(FL_DOWN_FRAME);
+          sv_project->color(FL_BACKGROUND2_COLOR);
+          sv_project->selection_color(FL_SELECTION_COLOR);
+          sv_project->labeltype(FL_NORMAL_LABEL);
+          sv_project->labelfont(0);
+          sv_project->labelsize(14);
+          sv_project->labelcolor(FL_FOREGROUND_COLOR);
+          sv_project->textfont(4);
+          sv_project->textsize(11);
+          sv_project->align(Fl_Align(FL_ALIGN_TOP));
+          sv_project->when(FL_WHEN_RELEASE);
+          Fl_Group::current()->resizable(sv_project);
+          o->linenumber_width(60);
+          o->linenumber_size(o->Fl_Text_Display::textsize());
+        } // TextViewer* sv_project
+        o->end();
+      } // Fl_Group* o
+      sv_tab->end();
+      Fl_Group::current()->resizable(sv_tab);
+    } // Fl_Tabs* sv_tab
+    { Fl_Group* o = new Fl_Group(10, 460, 500, 20);
+      { Fl_Button* o = new Fl_Button(10, 460, 61, 20, "Refresh");
+        o->labelsize(11);
+        o->callback((Fl_Callback*)update_sourceview_cb);
+      } // Fl_Button* o
+      { Fl_Light_Button* o = sv_autorefresh = new Fl_Light_Button(76, 460, 91, 20, "Auto-Refresh");
+        sv_autorefresh->labelsize(11);
+        o->callback((Fl_Callback*)update_sourceview_cb);
+      } // Fl_Light_Button* sv_autorefresh
+      { sv_autoposition = new Fl_Light_Button(172, 460, 89, 20, "Auto-Position");
+        sv_autoposition->labelsize(11);
+      } // Fl_Light_Button* sv_autoposition
+      { Fl_Button* o = new Fl_Button(460, 460, 50, 20, "Close");
+        o->labelsize(11);
+        o->callback((Fl_Callback*)toggle_sourceview_b_cb);
+      } // Fl_Button* o
+      { Fl_Box* o = new Fl_Box(265, 460, 190, 20);
+        Fl_Group::current()->resizable(o);
+      } // Fl_Box* o
+      o->end();
+    } // Fl_Group* o
+    sourceview_panel->size_range(384, 120);
+    sourceview_panel->end();
+  } // Fl_Double_Window* sourceview_panel
+  return sourceview_panel;
+}
+
+//